Timing controller for controlling emission of emission element for recognizing touch coordinates and electronic device including the same

Abstract

Disclosed is a timing controller including a coordinate data generation circuit configured to generate X coordinate emission data for acquiring X coordinates and Y coordinate emission data for acquiring Y coordinates of the touch coordinates, a selection circuit configured to time-divide 1 frame duration, to output image data to a display driving circuit during a display field, to output the X coordinate emission data to the display driving circuit during an X coordinate field, and to output the Y coordinate emission data to the display driving circuit during a Y coordinate field, and a control data generation circuit configured to generate source control data and gate control data for outputting the image data, the X coordinate emission data, and the Y coordinate emission data to a display panel and to output the source control data and the gate control data to the display driving circuit.

What is claimed is: 
     
       1. A timing controller for controlling emission of an emission element for recognizing touch coordinates, the timing controller comprising:
 a coordinate data generation circuit configured to generate X coordinate emission data for acquiring X coordinates and Y coordinate emission data for acquiring Y coordinates of the touch coordinates; 
 a selection circuit configured to time-divide 1 frame duration, to output image data to a display driving circuit during a display field, to output the X coordinate emission data to the display driving circuit during an X coordinate field, and to output the Y coordinate emission data to the display driving circuit during a Y coordinate field; and 
 a control data generation circuit configured to generate source control data and gate control data for outputting the image data, the X coordinate emission data, and the Y coordinate emission data to a display panel and to output the source control data and the gate control data to the display driving circuit, 
 wherein the emission element is an organic light emitting diode (OLED). 
 
     
     
       2. The timing controller of  claim 1 , wherein, in the 1 frame duration, the X coordinate field is executed after the display field is executed, and the Y coordinate field is executed after the X coordinate field is executed. 
     
     
       3. The timing controller of  claim 1 , wherein, in the 1 frame duration, the Y coordinate field is executed after the display field is executed, and the X coordinate field is executed after the Y coordinate field is executed. 
     
     
       4. The timing controller of  claim 1 , wherein, in the 1 frame duration, the Y coordinate field is executed after the X coordinate field is executed, and the display field is executed after the Y coordinate field is executed. 
     
     
       5. The timing controller of  claim 1 , wherein, in the 1 frame duration, the X coordinate field is executed after the Y coordinate field is executed, and the display field is executed after the X coordinate field is executed. 
     
     
       6. The timing controller of  claim 1 , wherein:
 the display panel comprises w data lines and h gate lines; 
 the source control data comprises a first data output enable signal comprising m data pulses for allowing each pixel to emit light in units of i (i being a natural number equal to or greater than 1) data lines using a first data voltage corresponding to the X coordinate emission data during the X coordinate field; and 
 the gate control data comprises a first gate output enable signal for simultaneously outputting gate pulses to the h gate lines in response to each of the m data pulses. 
 
     
     
       7. The timing controller of  claim 1 , wherein:
 the display panel comprises w data lines and h gate lines; 
 the source control data comprises a second data output enable signal comprising n data pulses for allowing each pixel to emit light in units of j (j being a natural number equal to or greater than 1) gate lines using a second data voltage corresponding to the Y coordinate emission data during the Y coordinate field; and 
 the gate control data comprises a second gate output enable signal for sequentially outputting gate pulses synchronized with the n data pulses, respectively, in units of j gate lines during the Y coordinate field. 
 
     
     
       8. The timing controller of  claim 1 , wherein:
 the display panel comprises w data lines and h gate lines; 
 the source control data comprises a third data output enable signal for allowing each pixel to sequentially emit light in units of 1 gate line during the display field; and 
 the gate control data comprises a third gate output enable signal for allowing each pixel to sequentially emit light in units of 1 gate line during the display field. 
 
     
     
       9. The timing controller of  claim 1 , wherein the X coordinate emission data and the Y coordinate emission data have a grayscale value equal to or less than a predetermined reference to prevent emission of a pixel based on the X coordinate emission data and the Y coordinate emission data from being perceived by a user's eye. 
     
     
       10. The timing controller of  claim 1 , wherein the X coordinates are determined using a detection timing at which an emission signal due to emission of a pixel that comes into contact with a pen during the X coordinate field is detected, and the Y coordinates are determined using a detection timing at which an emission signal due to emission of the pixel that comes into contact with the pen during Y coordinate field is detected. 
     
     
       11. An electronic device comprising:
 a display panel comprising a plurality of pixels; 
 a timing controller configured to time-divide 1 frame duration, to generate X coordinate emission data for acquiring X coordinates of touch coordinates and first control data during an X coordinate field, to generate Y coordinate emission data for acquiring Y coordinates and second control data during a Y coordinate field, and to generate third control data for outputting image data input from an outside during a display field; and 
 a display driving circuit configured to allow the pixel to emit light based on the X coordinate emission data according to the first control data during the X coordinate field, to allow the pixel to emit light based on the Y coordinate emission data according to the second control data during the Y coordinate field, and to allow the pixel to emit light based on the image data according to the third control data during the display field, 
 wherein each pixel comprises an organic light emitting diode (OLED). 
 
     
     
       12. The electronic device of  claim 11 , wherein, in the 1 frame duration, the X coordinate field is executed after the display field is executed, and the Y coordinate field is executed after the X coordinate field is executed. 
     
     
       13. The electronic device of  claim 11 , wherein, in the 1 frame duration, the Y coordinate field is executed after the display field is executed, and the X coordinate field is executed after the Y coordinate field is executed. 
     
     
       14. The electronic device of  claim 11 , wherein, in the 1 frame duration, the Y coordinate field is executed after the X coordinate field is executed, and the display field is executed after the Y coordinate field is executed. 
     
     
       15. The electronic device of  claim 11 , wherein, in the 1 frame duration, the X coordinate field is executed after the Y coordinate field is executed, and the display field is executed after the X coordinate field is executed. 
     
     
       16. The electronic device of  claim 11 , wherein:
 the display panel comprises w data lines and h gate lines; 
 the first control data comprises a first data output enable signal comprising m data pulses for allowing each pixel to emit light in units of i (i being a natural number equal to or greater than 1) data lines using a first data voltage corresponding to the X coordinate emission data during the X coordinate field, and a first gate output enable signal for simultaneously outputting gate pulses to the h gate lines in response to each of the m data pulses; and 
 the m is determined as a value obtained by dividing an X-direction resolution value of the display panel by an X coordinate precision value, and the X coordinate precision value is determined as a number of X-direction pixels to be recognized by a pen at one time among pixels included in the display panel. 
 
     
     
       17. The electronic device of  claim 11 , wherein:
 the display panel comprises w data lines and h gate lines; 
 the second control data comprises a second data output enable signal comprising n data pulses for allowing each pixel to emit light in units of j (j being a natural number equal to or greater than 1) gate lines using a second data voltage corresponding to the Y coordinate emission data during the Y coordinate field, and a second gate output enable signal for sequentially outputting gate pulses synchronized with the n data pulses, respectively, in units of j gate lines during the Y coordinate field; and 
 the n is determined as a value obtained by dividing a Y-direction resolution value of the display panel by a Y coordinate precision value, and the Y coordinate precision value is determined as a number of Y-direction pixels to be recognized by a pen at one time among pixels included in the display panel. 
 
     
     
       18. The electronic device of  claim 11 , further comprising:
 a pen configured to acquire the touch coordinates via contact with the display panel, 
 wherein the pen determines the X coordinates using a first detection timing at which an emission signal of a pixel that comes into contact with the pen is detected during the X coordinate field, and determines the Y coordinates using a second detection timing at which an emission signal of a pixel that comes into contact with the pen is detected during the Y coordinate field. 
 
     
     
       19. The electronic device of  claim 18 , wherein the pen determines an ordinal number of a first target data pulse corresponding to a first detection timing of the emission signal among data pulses included in a first data output enable signal during the X coordinate field as the X coordinates, and determines an ordinal number of a second target data pulse corresponding to a second detection timing of the emission signal among data pulses included in a second data output enable signal in the Y coordinate field as the Y coordinates of the touch coordinates. 
     
     
       20. The electronic device of  claim 19 , wherein the ordinal number of the first target data pulse is determined using a time difference to the first detection timing from a rising edge of a vertical synchronization signal, and the ordinal number of the second target data pulse is determined using a time difference to the second detection timing from the rising edge of the vertical synchronization signal.